Initial revision

1 files changed, 449 insertions, 0 deletions

diff --git a/fb/fboverlay.c b/fb/fboverlay.c
new file mode 100644
index 000000000..761cf0949
--- /dev/null
+++ b/fb/fboverlay.c
@@ -0,0 +1,449 @@
+/*
+ * $XFree86: xc/programs/Xserver/fb/fboverlay.c,v 1.5 2002/09/16 18:05:34 eich Exp $
+ *
+ * Copyright © 2000 SuSE, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  SuSE makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  Keith Packard, SuSE, Inc.
+ */
+
+#include "fb.h"
+#include "fboverlay.h"
+
+int	fbOverlayGeneration;
+int	fbOverlayScreenPrivateIndex = -1;
+
+/*
+ * Replace this if you want something supporting
+ * multiple overlays with the same depth
+ */
+Bool
+fbOverlayCreateWindow(WindowPtr pWin)
+{
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
+    int			i;
+    PixmapPtr		pPixmap;
+    
+    if (pWin->drawable.class != InputOutput)
+	return TRUE;
+
+#ifdef FB_SCREEN_PRIVATE
+    if (pWin->drawable.bitsPerPixel == 32)
+	pWin->drawable.bitsPerPixel = fbGetScreenPrivate(pWin->drawable.pScreen)->win32bpp;
+#endif
+
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	pPixmap = pScrPriv->layer[i].u.run.pixmap;
+	if (pWin->drawable.depth == pPixmap->drawable.depth)
+	{
+	    pWin->devPrivates[fbWinPrivateIndex].ptr = (pointer) pPixmap;
+	    /*
+	     * Make sure layer keys are written correctly by
+	     * having non-root layers set to full while the
+	     * root layer is set to empty.  This will cause
+	     * all of the layers to get painted when the root
+	     * is mapped
+	     */
+	    if (!pWin->parent)
+	    {
+		REGION_EMPTY (pWin->drawable.pScreen,
+			      &pScrPriv->layer[i].u.run.region);
+	    }
+	    return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+Bool
+fbOverlayCloseScreen (int iScreen, ScreenPtr pScreen)
+{
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    int			i;
+
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	(*pScreen->DestroyPixmap)(pScrPriv->layer[i].u.run.pixmap);
+	REGION_UNINIT (pScreen, &pScrPriv->layer[i].u.run.region);
+    }
+    return TRUE;
+}
+
+/*
+ * Return layer containing this window
+ */
+int
+fbOverlayWindowLayer(WindowPtr pWin)
+{
+    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
+    int                 i;
+
+    for (i = 0; i < pScrPriv->nlayers; i++)
+	if (pWin->devPrivates[fbWinPrivateIndex].ptr ==
+	    (pointer) pScrPriv->layer[i].u.run.pixmap)
+	    return i;
+    return 0;
+}
+
+Bool
+fbOverlayCreateScreenResources(ScreenPtr pScreen)
+{
+    int			i;
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    PixmapPtr		pPixmap;
+    pointer		pbits;
+    int			width;
+    int			depth;
+    BoxRec		box;
+    
+    if (!miCreateScreenResources(pScreen))
+	return FALSE;
+
+    box.x1 = 0;
+    box.y1 = 0;
+    box.x2 = pScreen->width;
+    box.y2 = pScreen->height;
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	pbits = pScrPriv->layer[i].u.init.pbits;
+	width = pScrPriv->layer[i].u.init.width;
+	depth = pScrPriv->layer[i].u.init.depth;
+	pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, depth);
+	if (!pPixmap)
+	    return FALSE;
+	if (!(*pScreen->ModifyPixmapHeader)(pPixmap, pScreen->width,
+					    pScreen->height, depth,
+					    BitsPerPixel(depth),
+					    PixmapBytePad(width, depth),
+					    pbits))
+	    return FALSE;
+	pScrPriv->layer[i].u.run.pixmap = pPixmap;
+	REGION_INIT(pScreen, &pScrPriv->layer[i].u.run.region, &box, 0);
+    }
+    pScreen->devPrivate = pScrPriv->layer[0].u.run.pixmap;
+    return TRUE;
+}
+
+void
+fbOverlayPaintKey (DrawablePtr	pDrawable,
+		   RegionPtr	pRegion,
+		   CARD32	pixel,
+		   int		layer)
+{
+    fbFillRegionSolid (pDrawable, pRegion, 0, 
+		       fbReplicatePixel (pixel, pDrawable->bitsPerPixel));
+}
+
+/*
+ * Track visible region for each layer
+ */
+void
+fbOverlayUpdateLayerRegion (ScreenPtr	pScreen,
+			    int		layer,
+			    RegionPtr	prgn)
+{
+    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
+    int			i;
+    RegionRec		rgnNew;
+    
+    if (!prgn || !REGION_NOTEMPTY(pScreen, prgn))
+	return;
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	if (i == layer)
+	{
+	    /* add new piece to this fb */
+	    REGION_UNION (pScreen,
+			  &pScrPriv->layer[i].u.run.region,
+			  &pScrPriv->layer[i].u.run.region,
+			  prgn);
+	}
+	else if (REGION_NOTEMPTY (pScreen, 
+				  &pScrPriv->layer[i].u.run.region))
+	{
+	    /* paint new piece with chroma key */
+	    REGION_INIT (pScreen, &rgnNew, NullBox, 0);
+	    REGION_INTERSECT (pScreen,
+			      &rgnNew, 
+			      prgn, 
+			      &pScrPriv->layer[i].u.run.region);
+	    (*pScrPriv->PaintKey) (&pScrPriv->layer[i].u.run.pixmap->drawable,
+				   &rgnNew,
+				   pScrPriv->layer[i].key,
+				   i);
+	    REGION_UNINIT(pScreen, &rgnNew);
+	    /* remove piece from other fbs */
+	    REGION_SUBTRACT (pScreen,
+			     &pScrPriv->layer[i].u.run.region,
+			     &pScrPriv->layer[i].u.run.region,
+			     prgn);
+	}
+    }
+}
+
+/*
+ * Copy only areas in each layer containing real bits
+ */
+void
+fbOverlayCopyWindow(WindowPtr	pWin,
+		    DDXPointRec	ptOldOrg,
+		    RegionPtr	prgnSrc)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
+    RegionRec		rgnDst;
+    int			dx, dy;
+    WindowPtr		pwinRoot;
+    int			i;
+    RegionRec		layerRgn[FB_OVERLAY_MAX];
+    PixmapPtr		pPixmap;
+
+    pwinRoot = WindowTable[pWin->drawable.pScreen->myNum];
+
+    dx = ptOldOrg.x - pWin->drawable.x;
+    dy = ptOldOrg.y - pWin->drawable.y;
+
+    /*
+     * Clip to existing bits
+     */
+    REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);
+    REGION_INIT (pScreen, &rgnDst, NullBox, 0);
+    REGION_INTERSECT(pScreen, &rgnDst, &pWin->borderClip, prgnSrc);
+    REGION_TRANSLATE(pScreen, &rgnDst, dx, dy);
+    /*
+     * Compute the portion of each fb affected by this copy
+     */
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	REGION_INIT (pScreen, &layerRgn[i], NullBox, 0);
+	REGION_INTERSECT(pScreen, &layerRgn[i], &rgnDst,
+			 &pScrPriv->layer[i].u.run.region);
+	if (REGION_NOTEMPTY (pScreen, &layerRgn[i]))
+	{
+	    REGION_TRANSLATE(pScreen, &layerRgn[i], -dx, -dy);
+	    pPixmap = pScrPriv->layer[i].u.run.pixmap;
+	    fbCopyRegion (&pPixmap->drawable, &pPixmap->drawable,
+			  0,
+			  &layerRgn[i], dx, dy, pScrPriv->CopyWindow, 0,
+			  (void *)(long) i);
+	}
+    }
+    /*
+     * Update regions
+     */
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	if (REGION_NOTEMPTY (pScreen, &layerRgn[i]))
+	    fbOverlayUpdateLayerRegion (pScreen, i, &layerRgn[i]);
+
+	REGION_UNINIT(pScreen, &layerRgn[i]);
+    }
+    REGION_UNINIT(pScreen, &rgnDst);
+}   
+
+void
+fbOverlayWindowExposures (WindowPtr	pWin,
+			  RegionPtr	prgn,
+			  RegionPtr	other_exposed)
+{
+    fbOverlayUpdateLayerRegion (pWin->drawable.pScreen,
+				fbOverlayWindowLayer (pWin),
+				prgn);
+    miWindowExposures(pWin, prgn, other_exposed);
+}
+
+void
+fbOverlayPaintWindow(WindowPtr pWin, RegionPtr pRegion, int what)
+{
+    if (what == PW_BORDER)
+	fbOverlayUpdateLayerRegion (pWin->drawable.pScreen,
+				    fbOverlayWindowLayer (pWin),
+				    pRegion);
+    fbPaintWindow (pWin, pRegion, what);
+}
+
+Bool
+fbOverlaySetupScreen(ScreenPtr	pScreen,
+		     pointer	pbits1,
+		     pointer	pbits2,
+		     int	xsize,
+		     int	ysize,
+		     int	dpix,
+		     int	dpiy,
+		     int	width1,
+		     int	width2,
+		     int	bpp1,
+		     int	bpp2)
+{
+    return fbSetupScreen (pScreen,
+			  pbits1,
+			  xsize,
+			  ysize,
+			  dpix,
+			  dpiy,
+			  width1,
+			  bpp1);
+}
+
+static Bool
+fb24_32OverlayCreateScreenResources(ScreenPtr pScreen)
+{
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    int pitch;
+    Bool retval;
+    int i;
+
+    if((retval = fbOverlayCreateScreenResources(pScreen))) {
+	for (i = 0; i < pScrPriv->nlayers; i++)
+	{
+	    /* fix the screen pixmap */
+	    PixmapPtr pPix = (PixmapPtr) pScrPriv->layer[i].u.run.pixmap;
+	    if (pPix->drawable.bitsPerPixel == 32) {
+		pPix->drawable.bitsPerPixel = 24;
+		pitch = BitmapBytePad(pPix->drawable.width * 24);
+		pPix->devKind = pitch;
+	    }
+	}
+    }
+
+    return retval;
+}
+
+Bool
+fbOverlayFinishScreenInit(ScreenPtr	pScreen,
+			  pointer	pbits1,
+			  pointer	pbits2,
+			  int		xsize,
+			  int		ysize,
+			  int		dpix,
+			  int		dpiy,
+			  int		width1,
+			  int		width2,
+			  int		bpp1,
+			  int		bpp2,
+			  int		depth1,
+			  int		depth2)
+{
+    VisualPtr	visuals;
+    DepthPtr	depths;
+    int		nvisuals;
+    int		ndepths;
+    int		bpp = 0, imagebpp = 32;
+    VisualID	defaultVisual;
+    FbOverlayScrPrivPtr	pScrPriv;
+
+    if (fbOverlayGeneration != serverGeneration)
+    {
+	fbOverlayScreenPrivateIndex = AllocateScreenPrivateIndex ();
+	fbOverlayGeneration = serverGeneration;
+    }
+
+    pScrPriv = xalloc (sizeof (FbOverlayScrPrivRec));
+    if (!pScrPriv)
+	return FALSE;
+ 
+#ifdef FB_24_32BIT
+    if (bpp1 == 32 || bpp2 == 32)
+	bpp = 32;
+    else if (bpp1 == 24 || bpp2 == 24)
+	bpp = 24;
+
+    if (bpp == 24)
+    {
+	int	f;
+	
+	imagebpp = 32;
+	/*
+	 * Check to see if we're advertising a 24bpp image format,
+	 * in which case windows will use it in preference to a 32 bit
+	 * format.
+	 */
+	for (f = 0; f < screenInfo.numPixmapFormats; f++)
+	{
+	    if (screenInfo.formats[f].bitsPerPixel == 24)
+	    {
+		imagebpp = 24;
+		break;
+	    }
+	}	    
+    }
+#endif
+#ifdef FB_SCREEN_PRIVATE
+    if (imagebpp == 32)
+    {
+	fbGetScreenPrivate(pScreen)->win32bpp = bpp;
+	fbGetScreenPrivate(pScreen)->pix32bpp = bpp;
+    }
+    else
+    {
+	fbGetScreenPrivate(pScreen)->win32bpp = 32;
+	fbGetScreenPrivate(pScreen)->pix32bpp = 32;
+    }
+#endif
+   
+    if (!fbInitVisuals (&visuals, &depths, &nvisuals, &ndepths, &depth1,
+			&defaultVisual, ((unsigned long)1<<(bpp1-1)) |
+			((unsigned long)1<<(bpp2-1)), 8))
+	return FALSE;
+    if (! miScreenInit(pScreen, 0, xsize, ysize, dpix, dpiy, 0,
+			depth1, ndepths, depths,
+			defaultVisual, nvisuals, visuals
+#ifdef FB_OLD_SCREEN
+		       , (miBSFuncPtr) 0
+#endif
+		       ))
+	return FALSE;
+    /* MI thinks there's no frame buffer */
+#ifdef MITSHM
+    ShmRegisterFbFuncs(pScreen);
+#endif
+    pScreen->minInstalledCmaps = 1;
+    pScreen->maxInstalledCmaps = 2;
+    
+    pScrPriv->nlayers = 2;
+    pScrPriv->PaintKey = fbOverlayPaintKey;
+    pScrPriv->CopyWindow = fbCopyWindowProc;
+    pScrPriv->layer[0].u.init.pbits = pbits1;
+    pScrPriv->layer[0].u.init.width = width1;
+    pScrPriv->layer[0].u.init.depth = depth1;
+
+    pScrPriv->layer[1].u.init.pbits = pbits2;
+    pScrPriv->layer[1].u.init.width = width2;
+    pScrPriv->layer[1].u.init.depth = depth2;
+    
+    pScreen->devPrivates[fbOverlayScreenPrivateIndex].ptr = (pointer) pScrPriv;
+    
+    /* overwrite miCloseScreen with our own */
+    pScreen->CloseScreen = fbOverlayCloseScreen;
+    pScreen->CreateScreenResources = fbOverlayCreateScreenResources;
+    pScreen->CreateWindow = fbOverlayCreateWindow;
+    pScreen->WindowExposures = fbOverlayWindowExposures;
+    pScreen->CopyWindow = fbOverlayCopyWindow;
+    pScreen->PaintWindowBorder = fbOverlayPaintWindow;
+#ifdef FB_24_32BIT
+    if (bpp == 24 && imagebpp == 32)
+    {
+	pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
+  	pScreen->CreateScreenResources = fb24_32OverlayCreateScreenResources;
+    }
+#endif
+
+    return TRUE;
+}